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COMPLETIONS & PRODUCTION OPTIMIZATION UTILIZING SPECIFIC MEASUREMENTS
- 1. Completions and production optimization utilizing phase specific measurements using molecular tracers Nolan Albrecht – Tracerco Business Development
- 2. Presentation agenda • Tracer technology overview • Pad design optimization utilizing molecular tracers • Well Spacing • Completion Design • Stage by Stage Production Confirmation • Magnitude of Communication with Offsets • What can we learn? • Data Analytics • Case Study
- 3. Today's tracer programs blur lines between conventional and unconventional projects as technology applied over years of experience and knowledge gained are used together to optimize production Tracers used for reservoir characterization as well as production and field development optimization
- 4. Particulate & particles Qualitative Encapsulated tracers Designed for linear release Liquid tracers Quantitative solutions Partitioning tracers Based on two measurements What can chemical tracers measure and under what physical conditions? Facts and fiction
- 5. So, what can we learn? • Are our wells spaced to minimize communication? • Is well spacing maximizing our footprint? • Which zones are performing well? Which aren’t? • Did we communicate with offset wells? • What is the magnitude of offset communication?
- 7. Finding the best rock
- 10. Top ten gas stages = 51.9% of total production
- 11. Top ten water stages = 54.3% of total production
- 12. (Click Animation to Play)
- 17. Case study: Successful zonal isolation of underperforming stages
- 18. Case study overview • Operator was drilling and completing a 4-stage vertical well. • All 4 stages were traced with unique molecular oil and water tracers. • Operator was trying to determine: • All stages were contributing • Which zones yielded profitable oil production • Determining completions “pay zone” by overlaying geological and completions data with the analytical tracer results. • Is mechanical intervention required to achieve optimal performance?
- 21. Data analytics take-aways • Stages 2-4 Accounted for 60% of water production and 99% of oil production. • Stage 1 accounts for 40% of water production and only 1% of oil production. • Operator decided to plug the first stage and only produce out of stages 2- 4. • Successful isolation of the first stage (bottom stage) yields: • 40% reduction of produced water, lowering disposal costs. • No measurable decrease in oil production. • Optimization of future drilling plans.
- 22. Thank you for your attention.
Editor's Notes
- Interwell, can see breakthrough and precursor for need for chemical treatments
- Particles independent of flow,
- Finding the best rock Example Case study tying petro, completions and drilling together with production Shows tracer measured stage production barrels per stage. Data presents production of each stage in BBL for a month. Toe and heel stages less productive than middle of well. Neat, but why? Real value is in understanding why. Tracers alone can only tell you what was produced from where. Just like a drilling, completions and geo-data can only tell about rock characteristics Marry the two and the data become powerful.
- Stage 17 they were having difficulty drilling, so they dropped to a lower target zone for easier rock. Stage 7 was a fault.
- Finding the best rock Example Case study tying petro, completions and drilling together with production Shows tracer measured stage production barrels per stage. Data presents production of each stage in BBL for a month. Toe and heel stages less productive than middle of well. Neat, but why? Real value is in understanding why. Tracers alone can only tell you what was produced from where. Just like a drilling, completions and geo-data can only tell about rock characteristics Marry the two and the data become powerful.
- Finding the best rock Example Case study tying petro, completions and drilling together with production Shows tracer measured stage production barrels per stage. Data presents production of each stage in BBL for a month. Toe and heel stages less productive than middle of well. Neat, but why? Real value is in understanding why. Tracers alone can only tell you what was produced from where. Just like a drilling, completions and geo-data can only tell about rock characteristics Marry the two and the data become powerful.
- Stage 7 fault, 18 stage
- Cumulative water, green top traced, stacked play eagleford. Communicated every where In bottom well first , because they were open a week earlier Why different than oil? Difference between total fracture length and effective fracture length Water moves from hydraulic pressure of frac (wells clean up prior to oil) Water communication between well proves fracture connectivity Oil move on reservoir pressure. Doesn’t communication because, 1 either pressure differential no longer exists, or 2, fractures were not propped open and closed when hydraulic pressure removed.
- Daily water explains views changes, as opposed to cumulative which shows additive and doesn’t go away. Notice how communication starts strong and then quits. Proves temporary nature. Real communication of interest is at equilibrium during normal production. In this case we see minimal oil communication, and temporary water communication. Team determine this these wells were on good spacing. Rule of thumb; we like to see minimal oil communication, say less than 5%. This way we know there is connectivity and complete drainage of the area. If no communication, we don’t know size of undrained area…fractures almost connected or of big undrained gap.
- Cumulative oil return Tracer added to upper level green well Recovered from all wells 2 month data Minimal communication Only to upper level yellow well No cross bench communication